Inking device for printing-machines.



0. OEHRING.

INKING DEVIGEI'OR PRINTING MACHINES.

- APPLICATION FILED MAB.. 22, 1910.

Patented Dec, 6, 1910.

l, n, l f MC f UNTER@ STATE@ PATENT FFQE.

OSCAR OEHRING, OF BERLIN, GERlv/IANY, ASSGNOR TO AMERICAN STAMP @t TICKET VENDING MACHINE CO., 0F NEW YORK, N. Y., A CORPGR-ATION OF NE JERSEY.

INKING DEVICE FOR PRINTING-MACHINES.

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Specification of Letters Patent.

Patented Dec. 6, 1910.

Application led March 22, 1910. Serial No. 550,832.

To aZZ whom it may concern:

Be it known that LAOSCAR Oni-nunc, a subject of the Emperor of Germany, residing at Berlin, Germany, have invented new and useful Improvements in lnking Devices for Printing-lliachines, of which the following is a specification.

This invention relates to printing machines, more particularly to the inking device employed on so-called self-printing machines; and has for its object to provide a simple and efficient device for automatically delivering a suitable quantity of ink from an ink fountain onto an inling roller rotatably mounted in a swinging frame adapted to vibrate between said fountain and the printing roller which latter roller is so designed that it assists in uniformly distributing the ink on the inking roller and thereby reduces to the minimum the quantity of ink applied to the printing surface and distribute it thereover as equitably as possible.

ln the drawing, which represents a vertical sectional view through a so-called selfprinting press, the letter a indicates a guideway through which passes a strip b of paper or other material on the surface of which an impression is to be printed. The guideway a is shown as mounted on a vertically disposed plate c forming a part of the frame g of the printing press. At or near the top of the frame g is a feed roll c faston a horizontal shaft c mounted to turn in suitable bearings carried by said frame. Fixed on one end of said shaft c is a gear wheel (Z, and a sprocket wheel, not shown, also fixed on said shaft or attached to the gear wheel CZ receives motion from a drive chain (Z2 operated by any suitable prime motor. lf desired any other convenient driving mechanism may be substituted for the sprocket wheel and chain.

The paper strip Z) enters the machine betwe-en the vertical plate a and the periphery of the feed roll c which latter bears against the surface of the strip and draws said strip downwardly in the direction of the printing roller g when rotated, either continuously or intermittently. ln the present .instance the feed roll is designed to be rotated intermittently, and feed only as much of the strip at each movement as needed.

Below the feed roll c and near the bottom of the frame g is journaled a shaft g, parallel to the shaft c, which carries the printing roller g, provided with a printing surface Zt extending around more or less of the peripheral surface of said roller. The printing surface L may be an electrotype, movable type or other means for producing an impression on the face of the strip b, an electrotype however is preferred. The surface of the printing roller not covered by the electrotype is smooth for a purpose to be hereinafter described. A gear wheel f on the shaft of the printing roller g meshes with a pinion c driven by the gear wheel Z on the feed roll shaft c.

The ink fountain z' is fastened to an arm z" pivoted on the vertical plate a, the free end of said arm and the fountain being forced downwardly by a spring Z2 surrounding a pin 3 passing through said arm, and its tension adjusted by a nut, as shown. The bottom of the inl; fountain is open and bears against a roller le which transfers ink from the fountain z' into which the roller projects, to the inking roller Z for covering the electrotype with ink.

On the shaft of the inl; supply roller 7c is mounted a disk a having peripheral teeth n with which a pin p projecting from one side of the gear wheel cZ, engages and partly rotates said roller 7c at each revolution of the gear wheel CZ.

The printing roller g and ink supply roller 7c rotate in relatively fixed bearings and are separated from each other a great-er distance than the diameter of the inlring roller Z, the roller Z therefore must travel from one to the other to get a fresh supply of ink and apply the same to the printing surface or electrotype ZL. This is accomplished by rotatably mounting the inking roller Z and a distributing roller m in a swinging frame 0 pivoted at 1 to the main frame Q, said swinging frame being normally held by a spring s in such position that the inking roller Z bears against the printing roller g and is turned by it.l The distributing roller m is rotated at the same time by the inking roller Z9 with which it is in contact.

Mounted on the shaft g to rotate therewith is a cam t, which, as the printing roller revolves, engages at the proper time a lug or roller 'n on the swinging frame 0 and swings said frame toward the inl; supply roller h until the inking roller Z comes in contact therewith. It is at this time that the pin p on the gear wheel Z engages a tooth a" on the disl a and turns the same and also the ink supply roller /U which in turn rotates the inlring roller z' and supplies the latter with ink. The distributing roller m is also rotated by the inlring roller and partly distributes the ink over the latter roller, while the roller Z is receiving ink, the electrotype ZL passing over the strip b and impressing its design thereon. rfhis being accomplished the highest point of the cam passes beyond the lug or roller u on the swinging frame and the latter is returned to its initial position by the spring s, bringing the inking roller against the concentric peripheral surface of the printing roller which again rotates the inling roller and in connection with the roller my, smoothly and evenly distributes the ink over the entire surface of the printing roller Z so that when the electrotype or printing surface is brought into contact with said roller 2', a minimum quantity of ink will be applied to the printing surface and equally distributed thereover.

The operation of the invention will be readily understood from the foregoing description. r1`he chain or belt Z2 may be driven by a continuously ruiming motor to print successive impressions on a number of strips Z), or it may be operated by a hand crank to print the strip, say for a ticket, only when desired. In the latter case the invention may form part of a vending machine of any approved or suitable type.

The strips Z) may be of relatively short length, or a long strip wound into a roll may be employed.

What is claimed as new is 1. A printing machine comprising an inl: supplying means, a printing roller having a portion of its periphery smooth, an inlring roller adapted to contact with both the printing surface and the smooth surface of the printing roller, means for causing said inlring roller to travel between the inlr supplying means and the printing roller, the smooth surface of which evenly distributes the inlr over the periphery of the inlring roller, and the latter roller over the printing surface, a distributing roller in contact with said inl:- ing roller to in distributing the inl; thereover, and means on the shaft of the printing roller for causing the travel of the inlring roller.

2. )t printing machine comprising a feed mechanism, a printing roller having a portion of its periphery smooth, an ink supply ineans. an inlring roller adapted to contact with both the printing surface and the smooth surface of the printing roller, a vibrating support therefor, and direct means for swinging said inlring roller and its support between the ink supplying means and the printing roller, the smooth surface of the latter serving to evenly distribute the ink over the periphery of the inking roller, and the latter roller over the printing surface.

3. A printing machine comprising a feed mechanism, a printing roller having a portion of its periphery smooth, an ink fountain, a distributing roller therefor, an oscillating inlrin'g roller mounted in vibrating arms and adapted to swing between the distributing roller and the printing roller and contact with both the printing` surface and the smooth surface of the printing roller, the smooth surface of said printing roller serving to evenly distribute the ink over the periphery of the inling roller and the latter over the printing surface, and a cam on the printing roll shaft for directly operating one of said vibrating arms.

4. A printing machine comprising a feed mechanism, a printing roller having a portion of its periphery smooth, an ink supplying means, an oscillating inlring roller, and means rotatable with the printing roller for swinging said inlring roller between the ink supplying means and both the smooth and printing surfaces of the printing roller during` the greater portion of the rotation of said printing roller.

a. A printing machine comprising a feed mechanism, a printing roller having a portion of its periphery smooth, an ink fountain, an inlr distributing roller associated therewith, an oscillating inhing roller adapted to receive ink from said distributing roller and apply the same to the printing roller, the smooth surface of the printing roller spreading` the ink evenly over the surface of the inlring. roller before the latter engages the printing surface, and means operated by the rotation of the feed mechanism for intermittently turning the inl( distributing roller.

6. A printing machine comprising a printing roller, an ink fountain, an ink distributing roller associated therewith, an inling roller movable between said ink distributing roller and the printing roller, a portion of the peripheral surface of the latter serving to evenly spread the inl; over the surface of the inlring roller and the latter roller over the printing surface. means operated in connection with the printing roller for swinging the inlring roller into engagement with the ink distributing roller, and means for resiliently holding the ink fountain continually against the periphery of the inl; distributing roller.

ln testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

OSCAR OEHRNG. 'Vitn esses r HENRY Hasrnn, VVOLDEMAR HAUPT. 

